Cinematograph-film spool



A. LABAN.

CINEMATOGRAPH mm SPOOL;

APPLICATION FILED SEPT-27| IQIB.

1,330,325. Patented Feb. 10,1920.

Fly; 4.

UNITED s'rar PATENT oFnioE. 1

V ARTHUR LABAN, OF MACKAY, QUEENSLAND, AUSTRALIA.

omEMATOGRAPH-EILM' spoon.

Specification of Letters Patent. Patented Feb. 10, 1920.

Application filed September 27, 1918. Serial No.'255,977.

T 0 all whom it may concern:

Be it known that I, ARTHUR LABAN, asubject of the King of Great Britainand'Ireland, residing at Mackay, in the State of- Queensland andCommonwealth of Australia, have invented certain new and usefulImprovements in Cinematograph-Film Spools; and do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to improvements in film or breaking ofi' the end;the objects of this invention are to provide means for facilitating themounting of films upon the spools, more especially when renewing sameduring operating, by which they may be instantaneously attached to andreleased from the spools, also to eliminate the risk of damaging thefilms.

The invention consists in fixing on the wooden boss of a spool a sheetmetal plate provided with two rows of teeth by stamping same and spacedto correspond with the perforations (usually termed sprocket holes) oneach side of the film; or inserting in the boss two rows of pins,screws, nails or such like to serve as projections for engaging with theperforations on each side of the p film. In spools having a sheet metalboss by fixing on same, by soldering or otherwise, a

sheet metal plate as above described or stamping the teeth out of theboss itself.

To fully describe the invention, reference is now made to the drawingsin Whicl1:

Figure 1, is a perspective view of the spool Iyyith one side partlyremoved to show-the oss.-

Fig. 2, plan of detached toothed metal plate.

Fig. 3, end elevation of same. 7 Fig. l, side elevation of same. A and Aare thesides of the spool and B the wooden boss, C atoothed metal plateattached to the boss. 7

It has not been deemed necessary to illustrate by drawings thealternative method of inserting pins, nails, screws or such like in thewoodenboss, instead of employing a detachable toothed plate, nor toillustrate teeth stamped out of the boss when said boss is of tubularsheet metal.

In operation the end of the film is placed upon the toothed plateand-one turn given to the spool when the film is instantaneously securedthereto and is instantaneously released when unwound without any risk ofdamage. What I do declare as my invention, and desire to secure byLetters Patent is Incombination with a hub for film reels, a platesecured to the hub, and outstruck portions formed in the plate toprovide projections for engagement with the perfora- I tions of a film.

Intestimony whereof, I ailix my signature. I

- ARTHUR LABAN.-

